DE10113533A1 - Coolant passage connecting apparatus for a machine tool, has an O-ring which can be removed together with the coolant nozzle after removal of the stopper screw, for its easy replacement - Google Patents

Abstract

The proximal end of a coolant nozzle (11) is inserted into a large-diameter portion provided at an end of a shaft's coolant passage. The coolant nozzle is urged toward the distal end by a coil spring (15), and is prevented from coming out, by a stopper screw (17). An O-ring seal (19) is provided at the distal end face of the coolant nozzle, and contacts to the periphery of an opening to a coolant passage of a tool holder. The O-ring may be easily replaced because the it can be removed together with the coolant nozzle after the removal of the stopper screw.

Description

The present invention relates to a coolant ka Channel connecting device in a machine tool, the cooling medium channels for supplying a tool with coolant fluid combines. More specifically, the invention relates to one Coolant channel connection device that a Kühlmittelka nal of a shaft which is formed on a main shaft, and a coolant channel of a tool on a tool is formed at one end of the main shaft, ver fluid-tight binds.

A known machine tool is designed so that under Pressurized coolant fluid from a top of a plant stuff that is attached to a main shaft for cooling and Lubrication of a workpiece, as well as for the removal of Cutting chips are ejected. To coolant fluid from one End of a coolant channel formed on a tool is to eject a workpiece, it is necessary that a fluid-tight connection between a coolant channel  Shaft formed on the main shaft and the coolant tel channel of the tool that is on the tool at the end of the main Shaft is designed to produce, the coolant channel of the tool includes a coolant channel on a factory is designed tool holder that holds the tool firmly and ent remotely on the main shaft.

For the fluid-tight connection between the coolant channel Shaft and the coolant channel of the tool has a known one Machine tool an o-ring or a gasket or gasket packing on the main shaft. If, for example, the tool neck is mounted on the main shaft, the O-ring or the Seal / packing gasket around the perimeter of an opening of the cooler middle channel pressed into the tool holder. In this way the coolant channels in the main shaft and in the tool holder using the O-ring or the you gasket / packing which is mounted on the main shaft, connected in a fluid-tight manner.

However, it can be a sealing member like the O-ring or the Seal / packing gasket sometimes allow coolant fluid leaks when used for a long period of time due to wear or tearing. In this In this case, the sealing component must be replaced. However, it is in the machine tool described above is very difficult Replace sealing component. For example, the Japanese Patent Laid-Open Publication No. 8-155783 den Exchange the O-ring on the inner surface of a Coolant supply component is attached to the end thereof, with a coolant channel included on the main shaft is formed in which a removable component that is on a End of the coolant supply component is screwed on is removed. However, the end of coolant supply construction partly where the O-ring is fitted, clearly inward from one  End of a housing arranged for the main shaft. Therefore the replacement of the O-ring at the remote position is difficult and prone to failure.

It is the object of the invention to provide a coolant channel connection Provide device in a machine tool, the the exchange facilitated.

This object is achieved by the features of claim 1 and Claim 11 solved. Other advantageous features are opposed of the dependent claims.

According to one aspect of the invention, the machine tool has one Main shaft, which is provided with a shaft coolant channel, for the supply of coolant fluid for a tool that is on an egg is attached to a distal end of the main shaft, the Shaft coolant channel fluid-tight with a coolant channel is formed on the tool, is connected, wherein a Seal member a coolant fluid leakage by pressing egg ver circumference of an opening to the tool coolant channel that is easily interchangeable.

According to one aspect of the invention, a coolant channel ver Binding device provided in a machine tool. The Machine tool has a main shaft with shaft cooling medium channel for the supply of coolant for a tool that attached to a distal end of the main shaft. The Shaft coolant channel is with a tool coolant channel, which is formed on the tool, connected fluid-tight. The Coolant channel connection device can be a sealing member included, which prevents coolant fluid from a ver binding section between the shaft coolant channel and Tool coolant channel exits, and a coolant nozzle that is removably attached to the distal end of the main shaft.  

The coolant nozzle is formed with a cavity that with the shaft coolant channel and the tool coolant channel ver to be tied while the tool is on the main shaft is attached. The coolant nozzle fastens the seal construction part removable on the circumference of an opening of the shaft cooling telkanals. The seal member is through the coolant nozzle against a circumference of an opening of the coolant duct of the plant stuff pressed.

In the coolant channel connection device of the invention the sealing member against the circumference of the opening of the tool coolant channel pressed when the tool on the main shaft is attached, preventing coolant fluid from being released the connecting section between the shaft coolant channel and exits the tool coolant duct. The sealing component is attached to the coolant nozzle. The coolant nozzle is from that detachable end of the main shaft. This structure allows it is the case that the sealing component and the coolant nozzle can be easily separated.

The cavity is formed in the coolant nozzle. The Ho The cavity is with the shaft coolant channel and the tool cooling middle channel connected while the tool on the main shaft is attached. In the coolant passage connection device the shaft coolant channel and the tool coolant can can be connected fluid-tight with the help of the sealing component. In addition, the sealing component together with the coolant Remove the nozzle from the main shaft as described above has been. This enables a user to use the sealing member to be replaced by a new one within reach. If the cooling medium channel connection device on a machine tool coolant fluid leakage in the main wave can be prevented and the ease of maintenance will improved.  

An obvious end of the coolant nozzle is fluid-tight and slidably inserted in the shaft coolant channel. The cooling medium-channel connection device can also be a preamble included component that remove the coolant nozzle to one biases the end of the main shaft, and a stopper member that is removably attached to the main shaft, and that the cooling center nozzle on one side of the distal end of the main shaft by engaging hereby stops so that the coolant nozzle on it is prevented from the distal end of the main shaft get.

In the coolant channel connection device, this is nahelie end of the coolant nozzle fluid-tight and slidable in the shaft coolant channel used. The coolant nozzle, the is inserted into the shaft coolant channel, is by the Preload component to the distal end of the main shaft breaks, so that the sealing member is advantageous against the circumference the opening of the shaft coolant channel is pressed by means of a prestressing force of the prestressing component, in particular if the seal member at the far end of the coolant nozzle is seen. Thus, coolant fluid leakage can be effective be prevented.

The stopper component is removable against the main shaft the biasing force attached, leaving the coolant nozzle on one side of the distal end of the main shaft stops. If the stopper member is engaged with the main shaft, the Coolant nozzle prevented by the biasing force in Coming out towards the far end of the main shaft. If the stopper component is removed from the main shaft, the coolant nozzle can be easily removed. With this Buildup can effectively prevent coolant fluid leakage  the and the sealing component that is attached to the coolant nozzle is easy to replace.

If the stopper component is removed from the main shaft, NEN the coolant nozzle and the preload component from the main shaft on one side of the far end thereof be removed.

Since the coolant nozzle and the biasing member together from the Main shaft on the far end side away from this can be the biasing member, such as a spring due to the removal of the stopper member from the Main shaft can be easily replaced in cases where the preload component due to deterioration or deterioration must be replaced over time. This structure allows the biasing member to be easily replaced, which to improve the ease of maintenance of a plant leads machine.

The preload component is arranged outside the coolant nozzle net. If the biasing member, such as the spring, in Is arranged inside the coolant channel, the header component subjected to corrosion by the coolant fluid his. In the coolant channel connection device of the inventor The prestressing component is placed outside the coolant nozzle ordered so that the pretensioning component no corrosion by the Coolant fluid is subjected. For example, if a spring is used as a biasing member, it is conventional necessary that the spring be made of a material which has excellent corrosion resistance, such as wise stainless steel (SUS) to prevent corrosion of the spring to prevent the coolant fluid. However, a spring that Made from widespread, inexpensive materials is, such as steel, in the coolant channel connection  tion device of the invention can be used because the spring no corrosion is caused by the coolant fluid. In this way, the manufacturing costs are reduced while corrosion of the preload component is prevented.

The nearby end of the coolant nozzle is fluid tight and slidably inserted in the shaft coolant channel. The cooling middle channel connecting device can furthermore a second Sealing component included, which is close to the obvious End of the coolant nozzle is provided. The second seal The component maintains a fluid tightness between an inner wall of the shaft coolant channel and an outer circumference of the coolant nozzle upright.

If the near end of the coolant nozzle is fluid tight and is slidably inserted in the shaft coolant channel it is advantageous if a sealing component is provided to the fluid tightness between the inner wall of the shaft cooler telkanals and the outer periphery of the coolant nozzle hold. Such a sealing member can prevent cooling medium fluid escapes at the nearby end of the coolant nozzle, so that the second sealing member in the coolant channel ver Binding device is provided. The second sealing component can ent from the main shaft together with the coolant nozzle be removed when the coolant nozzle is removed from the main shaft is removed.

By removing the second seal member from the main shaft together with the coolant nozzle can seal the second component can be replaced by a new one within reach, similar to how the first sealing component is replaced. In the Coolant channel connection device of the invention may be one Coolant fluid leakage can be effectively prevented and the corpse Maintenance of a machine tool is improved.  

Preferred embodiments of the invention will now de waisted with reference to the following drawings described.

Fig. 1 is a sectional view of a main shaft to which a coolant channel connection device is applied according to an embodiment of the invention, the near its En;

Fig. 2 is a sectional view of the main shaft near one end in a modification of the embodiment;

Fig. 3 is a sectional view of the main shaft near one end in another modification of the embodiment;

Fig. 4 is a sectional view of the main shaft near its one end in a further modification of the embodiment.

Preferred embodiments of the invention are described in detail with reference to the figure. Fig. 1 shows a sectional view of a main shaft 1 near one end to which a coolant passage connection device according to an embodiment of the invention is applied. A (not shown) housing for the main shaft 1 is provided with a spindle 5 which is rotatably supported by a bearing 3 . The spindle 5 has a shaft through hole 5 A, which extends along the central axis of the spindle 5 . On the side of the distal end (lower side in Fig. 1) of the shaft through hole 5 A, the spindle 5 has a tool mounting hole 5 B, the longitudinal cross section of which has a trapezoidal shape, as shown in Fig. 1 ge. The tool mounting hole 5 B is so constructed that a tool holder 90 is mounted therein, of a tool (not shown) holds. A draw bolt 91 of the tool holder 90 , which sits in the tool mounting hole 5 B, is fastened to the spindle 5 by a known clamping cartridge (not shown) in order to rotate together with the spindle 5 . A cooling medium supply member 7 is provided to extend through a substantially central portion of the shaft through hole 5 A. In the coolant supply device 7, a shaft coolant channel is formed 7A. A bearing member 9 is provided between the outer surface of the coolant supply part 7 at its distal end and the inner wall of the shaft through hole 5 A. The bearing component 9 is connected to the coolant supply component 7 by a screw. The position component 9 can slide together with the coolant supply component 7 relative to the spindle 5 in the (axial) biasing directions.

At the end of the shaft coolant channel 7 A, a section 7 B is formed with a large diameter, in which an obvious end section 11 A (upper end section in FIG. 1) of a coolant nozzle 11 can be used. A distal end portion 11 B of the coolant nozzle 11 has a larger diameter than the near end portion 11 A of the nozzle 11 , and a smaller diameter than the near end side of the draw bolt 91 . On the distal end portion 11 B, a flanged portion 11 C, the diameter of which is larger than the distal end portion 11 B, is formed on the side of the near end thereof. A coil spring 15 is provided as a biasing member between the flanged portion 11 C and a washer 13 compressed, the washer 13 is seen on the distal end of the coolant supply component 7 before. The coolant nozzle 11 is engaged with a stopper screw 17 as a stopper member that prevents the coolant nozzle 11 from coming out in the direction of the distal end of the spindle 5 (to the lower side in FIG. 1).

The outside of the stop screw 17 is screwed on the inner wall of the bearing member 9 near its distal end. The stopper screw 17 has a hole 17 A, which is provided substantially in its central portion. The remote Endabs chnitt 11 B of the coolant nozzle 11 is slidably inserted into the hole 17 A. The diameter of the hole 17 A is smaller than that of the flange portion 11 C. The stop screw 17 , which is engaged with the bearing member 9 , prevents the coolant nozzle 11 from coming out against a biasing force of the coil spring 15 as described above. The distal end side of the coolant nozzle 11 makes contact with the near end side of the draw bolt 91 by the biasing force of the coil spring 15 described above. In the distal end side of the coolant nozzle 11 , an annular groove 11 D is formed. The annular groove 11 D surrounds the outer periphery of an opening of a coolant channel 90 A in the tool holder 90 . An O-ring 19 is fitted as a seal member in the annular groove 11 D.

A cavity 11 E is formed in the substantially central portion of the coolant nozzle 11 and connects the coolant channel 90 A of the tool holder 90 and the shaft coolant channel 7 A. On the outside of the coolant nozzle 11 , a recess 11 F is formed at its proximal end. In the Ausneh mung 11 F is an O-ring 21 as a second seal construction part, which ensures fluid tightness between the section 7 B with a large diameter of the shaft coolant channel 7 A and the outside of the coolant nozzle 11 . Over the outer surface of the coolant supply device 7, an O-ring is teckt aufges 23, which provides a fluid tightness between the outer side of the coolant supply device 7 and the bearing member. 9 On the outside of the bearing member 9 , an O-ring 25 is attached, which ensures the fluid tightness between the outside of the bearing member 9 and the shaft through hole 5 A.

The tool holder 90 is inserted into the tool mounting hole 5 B and fastened by the clamping cartridge described above. The O-ring 19 is the 15 against the nearby surface of the tension bolt 91 adjacent, pressed by the biasing force of the Spiralfe at the opening to the coolant channel 90 A of the tools holder 90th The O-ring 19 prevents the coolant fluid from leaking out of the opening. The Wellenkühlmit telkanal 7 A and the coolant channel 90 A of the tool holder 90 are fluid-tight through the cavity 11 E of the coolant nozzle 11 .

In this way, the coolant fluid flowing through the shaft coolant channel 7 A can be effectively ejected from a tip of the tool without leaking. In addition, leakage of the coolant fluid through the O-ring 21 can be prevented more effectively, which is provided between the outside of the coolant nozzle 11 and the section 7 B with a large diameter of the shaft cooling medium channel 7 A.

If the tool holder 90 is removed from the tool mounting hole 5 B and then the stop screw 17 is removed from the bearing member 9 using a special tool, the coolant nozzle 11 can be together with the O-ring 19 , the coil spring 15 , the washer 13 and the O-ring 21 are removed. A user can easily replace the O-rings 19 , 21 and the coil spring 15 within reach with new ones. The O-rings 19 , 21 are removed from the coolant nozzle 11 , for example, using a needle or a pin. Then new O-rings 19 , 21 are each fitted in the annular groove 11 D and the recess 11 F. Since after a new coil spring 15 is placed over the coolant nozzle. The coolant nozzle 11 , in which new O-rings 19 , 21 and the spiral spring 15 are mounted, can be used in the bearing component 9 .

Thereafter, the stopper screw 17 is engaged with the bearing member 9 to prevent the coolant nozzle 11 from coming out. The exchange of the O-rings 19 , 21 and the spiral spring 15 is thus completed. The operations of fastening or removing the coolant nozzle 11 and the stopper screw 17 become easier when the bearing member 9 and the coolant supply member 7 are moved as far as possible to the far end side of the main shaft 1 . In such a machine tool, which contains the main shaft 1 of the embodiment example, the simplicity of maintenance is greatly improved ver. In addition, the coil spring 15 is not subjected to corrosion by the coolant fluid because the coil spring 15 is inserted over the outer surface of the coolant nozzle 11 . Therefore, well-known, inexpensive materials such as steel can be used for the coil spring 15 , which leads to a reduction in the manufacturing cost while preventing the coil spring 15 from corrosion.

Machine tools are generally available with a variety Provide tool holders for each tool. In the above Written embodiment is not the sealing member necessarily provided for each of the tool holders, so that the system costs will not increase.

Modifications of the main shaft 1 will be described with reference to FIGS. 2 to 4. It should be emphasized that the reference numerals in FIG. 1 denote similar components to those in FIGS . 2 to 4, and a detailed explanation regarding FIGS. 2 to 4 is omitted. The reference numerals in FIG. 2 denote similar components to those shown in FIGS. 3 and 4, so that a detailed explanation is also omitted here.

In a main shaft 31 shown in FIG. 2, a screw hole 11 G is formed in the inner surface of the annular groove 11 D at the distal end portion 11 B of the coolant nozzle 11 . A removable component 33 is screwed into the screw hole 11 G. The removable component 33 is provided with a cavity 33 A, which has the same diameter as the cavity 11 E in order to connect the cavity 11 E of the coolant nozzle 11 and the coolant channel 90 A of the tool holder 90 . On the inner wall of the screw hole 11 G, O-ring 35 is fastened, which maintains the fluid tightness between the outer surface of the removable component 33 and the coolant nozzle 11 .

In the main shaft 31 thus constructed, the coolant nozzle 11 is first removed as described above when the O-ring 19 is replaced with a new one. The removable component 33 is then removed from the coolant nozzle 11 . The O-ring 19 is mounted D 11 between the outside of the detachable member 33 and the annular groove. Thus, the O-ring 19 is simply replaced.

Differences between the coolant nozzle 11 of the main shaft 51, shown in Fig. 3, and the coolant nozzle 11 of the main shaft 31, which is shown in Fig. 2, hereinafter bes cribed. In the shaft 51 , the annular groove 11 D is formed on the removable component 33 . The O-ring 35 is attached to the removable component. The stop screw 17 is not used for the main shaft 51 . Instead, a stopper section 9 A, which has substantially the same cross-sectional profile as the stop screw 17 , is integrally formed with the bearing member 9 near its distal end.

In the main shaft 51 described above, the exchange of the coil spring 15 requires the dismantling of the shaft 51 from its near end. The O-rings 19 , 35 are removed together with the detachable member 33 when the tool holder 90 is removed from the tool attachment hole B, and then the detachable member 33 is removed from the coolant nozzle 11 . Therefore, the O-rings 19 , 35 can be easily replaced, as described above with respect to the embodiments using the main shaft 31 . The coil spring 15 is inserted over the outer surface of the coolant nozzle 11 so that the coil spring 15 is not subjected to corrosion by the coolant telfluid, as described above in the Ausführungsbeispie len using the main shafts 1 , 31 has been described.

In the exemplary embodiments described above, the O-ring 19 touches the nearby end face of the pull bolt 91 . However, the O-ring 19 can touch the inner wall of a coolant channel 190 A of a tool holder 190 if it is provided in a main shaft 71, which is shown in FIG. 4. 4 As seen in Fig., The coolant channel has 190 a of the tool holder 190 on its proximal end, a portion 190 B of large diameter. The coolant nozzle 11 of the main shaft 71 has a protrusion 11 H at its distal end. The projection 11 H stands with the section 190 B with a large diameter in a handle. The O-ring 19 is plugged on the outer surface of the pre 11 H jump.

As described above, the O-ring 19 can be seen so that it touches the nearby end of the Zugbol zens 91 , or that it touches the inner wall of the coolant channel 190 A of the tool holder 190 . However, the effect of biasing the coolant nozzle 11 is remarkable by the coil spring 15 in the former case, that is, when the O-ring 19 is provided at the distal end of the coolant nozzle 11 to sen against the nearby end side of the pull-stud 91 to pres.

While the invention with reference to the Ausführungsbeis piele has been described, it should be understood that the invention not on the individual statements in the aforementioned Embodiments are shown is limited. displacement Modifications and changes can be made without departing from the scope of the invention.

For example, a packing or a gasket can be used, although the aforementioned embodiments use an O-ring as a gasket component. In the above-described embodiments, a coil spring is used as the biasing member. However, a rubber or an elastic material or a plate spring can also be used. Furthermore, the biasing member need not necessarily be seen before. For example, a component can be provided directly at the end of the coolant supply channel 7 , which is similar to the removable component 33 shown in FIG. 3.

An obvious end of a coolant nozzle 11 is inserted into a section with a large diameter, which is provided at one end of a shaft coolant channel 7 A. The coolant nozzle 11 is urged by a coil spring 15 to its distal end and prevented by a stop screw 17 from coming out he. On the distal end side of the coolant nozzle 11, an O-ring 19 is provided as a seal member, which contacts the periphery of an opening with a coolant channel 90 A of a work-producing holder 90th The O-ring 19 can be easily replaced since the O-ring can be removed together with the coolant nozzle 11 after the stop screw 17 has been removed.

Claims (22)

1. Coolant channel connection device in a machine tool, the machine tool has a main shaft ( 1 ) which is formed with a shaft coolant channel ( 7 A) for the supply of a tool with coolant fluid, which are attached to an distant end of the main shaft ( 1 ) The shaft coolant channel ( 7 A) is connected in a fluid-tight manner to a tool coolant channel ( 90 A) which is formed on the tool, the device having the following components:
a sealing member ( 19 ) that prevents coolant fluid from leaking from a connecting portion between the shaft cooling medium channel ( 7 A) and the tool coolant channel ( 90 A) to the outside; and
a coolant nozzle ( 11 ) which is removably attached to the distal end of the main shaft ( 1 ), the coolant nozzle being formed with a cavity ( 11 E) which ver with the shaft coolant channel ( 7 A) and the tool coolant channel ( 90 A) is to be tied while the tool is attached to the main shaft ( 1 ), the coolant nozzle ( 11 ), the seal assembly part ( 19 ) being removably attached to a periphery of an opening of the coolant channel, the seal member through the coolant nozzle against a periphery of a Opening is pressed to the tool coolant channel of the tool. 2. Coolant channel connection device according to claim 1, characterized in that an obvious end of the coolant nozzle ( 11 ) is fluid-tight and slidably inserted in the Wellenkühlmit telkanal ( 7 A), and that the coolant channel connection device further comprises the following components:
a biasing member ( 15 ) urging the coolant nozzle ( 11 ) to a distal end of the main shaft ( 1 ); and
a stopper member ( 17 ) which is removably attached to the main shaft ( 1 ) and which stops the coolant nozzle ( 11 ) on one side of the distal end of the main shaft ( 1 ) by engagement therewith, so that the coolant nozzle can be prevented ( 11 ) can come out to the distal end of the main shaft ( 1 ). 3. Coolant channel connecting device according to claim 2, characterized in that when the stopper member ( 17 ) from the main shaft ( 1 ) is removed, the coolant nozzle ( 11 ) and the biasing member ( 15 ) together from the main shaft ( 1 ) on one side the distal end of it can be removed. 4. Coolant channel connection device according to claim 2 or 3, characterized in that the biasing member ( 15 ) is arranged outside half of the coolant nozzle ( 11 ). 5. Coolant channel connection device according to one of claims 2 to 4 , characterized in that the sealing construction part ( 19 ) touches an obvious end face of the tool. 6. Coolant channel connecting device according to one of claims 1 to 5 , characterized in that the nearby end of the coolant nozzle ( 11 ) is inserted in a fluid-tight and displaceable manner in the shaft coolant channel ( 7 A), and that the coolant channel connecting device further comprises a second sealing component ( 21 ). has, which is provided in a vicinity of the proximal end of the coolant nozzle ( 11 ), wherein the second sealing component maintains a fluid tightness between an inner wall of the shaft coolant channel ( 7 A) and an outer circumference of the coolant nozzle ( 11 ). 7. Coolant channel connecting device according to one of claims 1 to 6 , characterized in that the coolant nozzle ( 11 ) contains a fastening component which removably fastens the sealing component to the coolant nozzle ( 11 ). 8. Coolant channel connecting device according to one of claims 1 to 7 , characterized in that the coolant nozzle ( 11 ) is screwed onto the main shaft ( 1 ). 9. Coolant channel connection device according to one of Ans claims 1 to 8 , characterized in that the sealing construction part touches an inner wall of the tool coolant channel ( 90 A). 10. Coolant channel connection device according to one of claims 1 to 9 , characterized in that the sealing part has an annular shape which surrounds the shaft coolant channel ( 7 A). 11. Coolant channel connecting device between a coolant channel ( 7 A) in a main shaft ( 7 ) and a coolant channel ( 90 A) through a tool holder ( 90 ), which has the following components:
a coolant nozzle ( 11 ) which connects the coolant channel in the main shaft ( 7 A) and the coolant channel through the tool holder ( 90 A);
a seal member ( 19 ) removably attached to the coolant nozzle ( 11 ) opposite the tool holder ( 90 ); and
a device for accomplishing that the sealing component comes into engagement with a circumference of the coolant channel through the tool holder ( 90 ) in order to form a leakage seal. 12. A coolant channel connection device according to claim 11, characterized in that it further comprises a support structure ( 9 ), the device for the actuation being a spring ( 15 ) which is fastened over the coolant nozzle ( 11 ) and between a flange on an outer surface of the cooler middle nozzle ( 11 ) and a lip in the support structure in a handle. 13. Coolant channel connecting device according to claim 11, characterized in that it further comprises a support structure ( 9 ) which is fixed in the main shaft ( 7 ), the coolant channel in the main shaft ( 7 A) through the support structure ( 9 ) and the Coolant nozzle ( 11 ) in the support structure ( 9 ) is mounted. 14. Coolant channel connection device according to claim 13, characterized in that it further comprises a stopper screw ( 17 ) which is screwed into the support structure ( 9 ), the coolant nozzle ( 11 ) going through a hole in the stopper screw ( 17 ), wherein the stop screw and a flange on the outside of the coolant nozzle ( 11 ) holds the coolant nozzle ( 11 ) in the support structure ( 9 ). The coolant channel connection device according to claim 14, further comprising a detachable member ( 33 ) received in one end of the coolant nozzle ( 11 ), the sealing member ( 35 ) being mounted between the coolant nozzle ( 11 ) and the detachable member ( 33 ). 16, coolant channel connection apparatus of claim 13, further comprising a removable component (33) which is received in one end of the coolant nozzle (11), wherein the sealing member between the coolant nozzle (11) and the starting ingestible component is mounted. 17. The coolant channel connection device according to claim 13, characterized in that the support structure ( 9 ) has a stopper section, and in that the coolant nozzle ( 11 ) has a flange which extends from an outer surface, the stopper section and the flange of the coolant nozzle ( 11th ) hold in the support structure. 18. The coolant channel connection device according to claim 15. characterized in that the removable component has a circumference has snut and furthermore has a second sealing component, which is fixed in the circumferential groove. 19. Coolant channel connection device according to claim 11, characterized in that the tool holder ( 90 ) has a ver enlarged opening that leads to the coolant channel ( 90 A), and that the coolant nozzle ( 11 ) has an end which is received in the ver enlarged opening becomes. 20. Coolant channel connection device according to claim 14, characterized in that the removable component ( 33 ) has a circumferential groove and further comprises a second sealing component ( 35 ) which is fastened in the circumferential groove. 21. A coolant channel connection device according to claim 11, characterized in that the sealing component ( 21 ) is attached to one end of the coolant nozzle ( 11 ) and is opposite an end side of the tool holder ( 90 ). 22. Coolant channel connection device according to claim 19, characterized in that the sealing component ( 21 ) is received in a groove ( 11 F) at the end of the coolant nozzle ( 11 ) and touches a wall of the enlarged opening in the tool holder ( 90 ).